Home · FSC 5310 Nuts And Washers · NSN 5310-01-391-5250

NSN 5310-01-391-5250 — Nut,Self-Locking,Hexagon

NIIN 01-391-5250 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 6 government buys since 2018

The government has bought this item about every 1.4 years (loose, gaps vary ±74%). Last buy Feb 25, 2026. The gaps are too uneven to put a window on the next one.

How well this works: for loose items, "next buy about one typical gap after the last, give or take 136 days" caught the actual next buy 37% of the time across 34,631 past buys, against 24% for a fixed "one year later" guess. A rhythm, not a schedule: DLA buys when stock and demand say so. Every item due for a buy now.

NSN 5310-01-391-5250 is the national stock number for a nut,self-locking,hexagon in federal supply class 5310 (Nuts And Washers). It cross-references to 1 manufacturer part number from 2 CAGE codes, including Meritor Heavy Vehicle Systems, LLC, Meritor Industrial Products, LLC; the primary is 40X-1240. The unit of issue is EA and the FLIS list price is $27.89.

The U.S. government has bought this item 21 times on record, 3 of them in the last 24 months, most recently on September 28, 2026 for $2,190 from Larkos Packing And Distribution Inc.. The median unit price paid over 36 months is $47.33. A DLA long-term contract solicitation (SPE4A726RXB54) names it, with an estimated annual demand of 80. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part number from 2 CAGEs

open solicitations, all agencies

government buys in 24 months · median $47.33

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
40X-1240	78500	Meritor Heavy Vehicle Systems, LLC	3 · Design control (vendor)	2 · Fully interchangeable
40X-1240	3D6E9	Meritor Industrial Products, LLC	5 · Secondary reference	2 · Fully interchangeable

Government demand

Long-term contracts and larger buys (DLA RFP / IFB)

SPE4A726RXB54 · long-term contract, 5 yr · estimated annual demand 80 · closes Sep 30, 2026

When a stock number goes onto a long-term contract, the spot RFQs for it usually stop for the term; the holder then sources the parts. All open long-term contracts →

What the government paid

Date	Vendor	Qty	Unit cost	Amount	Buyer	Reference
Sep 28, 2026	Larkos Packing And Distribution Inc. 6PZL1			$2,190	Dla	SPE4A626V407D » Award/Basic Package View
Feb 25, 2026	Larkos Packing And Distribution Inc. 6PZL1	27	$30.61		Dla	SPE4A626V9096
Aug 25, 2025	V2x Systems LLC 1D510	127	$64.05		Dla	SPE4A625PAAH1
Jan 28, 2022	Larkos Packing And Distribution Inc. 6PZL1	214	$19.99		Dla	SPE4A622V9986
Jul 15, 2020	Larkos Packing And Distribution Inc. 6PZL1	135	$17.87		Dla	SPE5E820P3434
Mar 5, 2019	Meritor Industrial Products, LLC 3D6E9	211	$42.11		Dla	SPE5E819V4466
Aug 15, 2018	Wheeler Fleet Solutions, Co. 55683	123	$47.66		Dla	SPE5E818V9088
Jun 23, 2010	Asrc Federal Facilities Logistics, LLC 79343	532	$18.43		Dla	SPM7LX08D90080041
Jun 17, 2010	Asrc Federal Facilities Logistics, LLC 79343	100	$18.43		Dla	SPM7LX08D90080039
May 27, 2008	Matheny Motor Truck Co 019W6	334	$15.54		Dla	SPM5A808V1010
Apr 8, 2008	Asrc Federal Facilities Logistics, LLC 79343	194	$16.20		Dla	SPM5A808V0790
Feb 26, 2008	Houston Drive Train Vehicle Component Sales, Inc. 1SER6	131	$17.55		Dla	SPM5A808V0534
Jan 4, 2008	Minuteman Trucks, LLC 3SXJ1	115	$17.72		Dla	SPM5A808V0251
Sep 29, 2007	Kampi Components Co Inc 7Z016	120	$17.87		Dla	SPM5A907V1297
Aug 25, 2007	Joint And Clutch Service Inc 5P322	4	$23.80		Dla	SPM5A807M2203
Aug 14, 2007	Cbt Corporation 4N361	50	$18.16		Dla	SPM5A807V0594
Apr 20, 2007	Cbt Corporation 4N361	27	$18.47		Dla	SPM5A807V0346
Sep 22, 2006	B.T.M.C. Corporation 7S526	1	$23.09		Dla	SPM75002D97020719
Sep 21, 2006	B.T.M.C. Corporation 7S526	1	$23.09		Dla	SPM75002D97020706
Sep 7, 2006	B.T.M.C. Corporation 7S526	1	$23.09		Dla	SPM75002D97020610

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 21 buys on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 40X-1240.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $27.89
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

End Item Identification: MRAP - COMMON NSN - USED ON 2 MRAP VARIANTS AND 1 OTHER WEAPON SYSTEM; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.